Capsule Infusion Chamber Guide Channels for Reliable Loading
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Solution Overview
Problem
Existing infusion devices for preparing beverages from single-serving capsules are complex and costly due to the need for intricate mechanisms to position and retain capsules within the infusion chamber, which complicates both the construction and maintenance of these devices.
Innovation Solution
A simplified infusion device design featuring guide channels and extractor members that move in parallel to the opening and closing direction of the infusion chamber, allowing for easy capsule insertion and unloading, with thrust profiles and elastic elements to facilitate the opening and closing movements, enabling a cost-effective and reliable operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If complex mechanisms are used to position and retain capsules within the infusion chamber, then capsule positioning reliability is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The capsule itself serves as the retaining mechanism through its flange structure that engages with the guide channels. The capsule's own geometric features (flange, body shape) are utilized to achieve proper positioning and retention during infusion, eliminating the need for separate complex retaining mechanisms. This self-service approach resolves the contradiction by making the capsule functional for both insertion and retention without adding device complexity.
Solution Approach 2:
The retention function is extracted from a separate complex mechanism and integrated into the simple guide channel structure. The guide channels are designed with specific geometric features (stops, engagement surfaces) that work with the capsule's flange to provide retention, separating the retention function from complex mechanical systems and implementing it through simple structural features.
2Device complexity
If simple guide structures are used for capsule insertion, then device complexity is reduced, but capsule positioning precision deteriorates
Solution Approach 1:
The guide channels incorporate localized geometric features (stops, engagement surfaces, specific cross-sectional shapes) at critical positions along the channel length. These local structural variations provide precise positioning control at specific points (capsule insertion depth, flange engagement position) while keeping the overall guide structure simple. The local quality principle allows simple global structure with precise local control features.
3Reliability
If intricate mechanisms are used to unload capsules after infusion, then unloading reliability is improved, but ease of maintenance deteriorates
Solution Approach 1:
The capsule unloading mechanism utilizes the capsule's own geometric features (flange, body shape) and gravity to achieve automatic extraction. The guide channels are designed with extraction zones that allow the capsule to be naturally ejected after infusion without requiring complex mechanical retrieval systems. This self-service unloading approach maintains reliability while dramatically improving maintenance ease by eliminating intricate unloading mechanisms.
4Reliability
If multiple moving parts are used for chamber closing and opening, then sealing reliability is improved, but device complexity increases
Solution Approach 1:
The chamber closing and sealing functions are merged into a single integrated movement of the guide channels relative to the capsule. The guide channels themselves provide the sealing interface through their geometric design (engagement surfaces, fit tolerances) rather than requiring separate sealing components. This merging approach achieves reliable sealing through the primary moving parts without adding complexity through additional sealing mechanisms.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution provides a reliable, inexpensive, and easy-to-maintain infusion device that simplifies the process of inserting and unloading capsules, reducing complexity and operational costs while ensuring efficient beverage preparation.
Implementation Method 1
elastic elements to facilitate the opening and closing movements
Implementation Method 2
dropped by gravity
Data Source
Figure 1
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AI summary
The device comprises a first portion (3) of an infusion chamber and a second portion (5) of an infusion chamber, movable with respect to each other according to an opening and closing direction; a first duct (49) to feed an infusion fluid into said infusion chamber; a second duct (31) for delivery of the food product from the infusion chamber; a pair of guide channels (17) to insert a capsule (C) into a space between the first portion of the infusion chamber and the second portion of the infusion chamber. The guide channels are each produced on a respective movable element (15); and the movable elements are positioned substantially opposite each other and can be opened to release the capsule into the infusion chamber.